Who Has the Authority to Take the Country to War? -- Presidential Discretion and the Path to War : the Mexican War and World War II -- "Uniting Our Voice at the Water's Edge" : Legislative authority in the Cold War and Roosevelt Corollary -- Defensive War : the Cuban Missile Crisis and Cambodian Incursion -- Legislative Investigations as War Power : the Senate Munitions Investigation and Iran-Contra -- The Politics of Constitutional Authority.